mirrors/salsa
1
0
Fork 0
mirror of https://github.com/salsa-rs/salsa.git synced 2024-10-23 12:49:57 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

update hello-world

Browse source
This commit is contained in:
Niko Matsakis 2018-11-01 05:59:33 -04:00
parent 206af35e2b
commit 4a8b9123e6
1 changed files with 9 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
examples/hello_world/README.md
View file

@ -163,11 +163,11 @@ start using it:
```rust ```rust
fn main() { fn main() {
let db = DatabaseStruct::default(); let mut db = DatabaseStruct::default();
println!("Initially, the length is {}.", db.length().get(())); println!("Initially, the length is {}.", db.length().get(()));
db.query(InputString) db.query_mut(InputString)
.set((), Arc::new(format!("Hello, world"))); .set((), Arc::new(format!("Hello, world")));
println!("Now, the length is {}.", db.length().get(())); println!("Now, the length is {}.", db.length().get(()));
@ -177,16 +177,16 @@ fn main() {
One thing to notice here is how we set the value for an input query: One thing to notice here is how we set the value for an input query:
```rust ```rust
db.query(InputString) db.query_mut(InputString)
.set((), Arc::new(format!("Hello, world"))); .set((), Arc::new(format!("Hello, world")));
``` ```
The `db.query(Foo)` method takes as argument the query type that The `db.query_mut(Foo)` method takes as argument the query type that
characterizes your query. It gives back a "query table" type, which characterizes your query. It gives back a "mutable query table" type,
offers you more advanced methods beyond simply executing the query which lets you invoke `set` to set the value of an input query. There
(for example, for input queries, you can invoke `set`). In fact, the is also a `query` method that gives access to other advanced methods
standard call `db.query_name(key)` to access a query is just a in fact, the standard call `db.query_name(key)` to access a query is
shorthand for `db.query(QueryType).get(key)`. just a shorthand for `db.query(QueryType).get(key)`.
Finally, if we run this code: Finally, if we run this code: